Ensuring Dynamic Accuracy of Aircraft’s Air Data System with Motionless Flush-Mounted Receiver of Flow

The article views, that draw-backs of aircraft’s traditional air data systems (ADS), built based installed in incoming air flow and installed outside the fuselage the pitot tube booms, temperature braking receivers, vane sensors of incidence angle and gliding angle are eliminated in original ADS with motionless flush-mounted receiver of flow. The functional scheme of aircraft’s air data system with motionless flush-mounted receiver of flow, built based on the original ion-mark sensor of aerodynamic angle and true airspeed, on receiving board of which the hole-receiver is installed to perceive the static pressure of incoming air flow. Models of operator sensitivity and dynamic errors of instrumentation channels due to random stationary atmospheric turbulence and random flow pulsations at location of the ion-mark sensor on fuselage of the aircraft are presented. Recommended to use the optimal linear Wiener filter, the synthesis method of which is revealed on example of the true airspeed instrumentation channel to reduce the stationary dynamic errors of instrumentation channels of air data system with motionless flush-mounted receiver due to atmospheric turbulence. Recommended to use the principle of integration to reduce the stationary random dynamic errors of instrumentation channels of air data system with motionless flush-mounted receiver due to flow pulsations near fuselage at location of ion-mark sensor. Proposed to use aeromechanical measuring and computing system built based VIMI method with Luenberger observer as an additional component of integrated air data system. Integrated system simulates the movement of aircraft in this flight mode and by flight parameters measured with high accuracy using flush-mounted receivers "restores" air signals included in equations of movement of aircraft. The structure, method and algorithms for determining air signals in channels of aeromechanical measuring and computing system with a Luenberger observer are presented. Using the example of true airspeed measurement, the analysis and quantitative assessment of residual dynamic error of integrating channel of integrated aircraft’s air data system with motionless flush-mounted receiver of flow is carried out.

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2. Makarov N. N. Ensuring systems of safety of onboard ergatic complex: theory, design and application / edition by Dr. tech. science V. M. Soldatkin, Moscow, Mashinostroenie / Mashinostroenie — Polet, 2009, 760 p. (in Russian).

3. Filatov G. A., Puminova G. S., Silvestrov P. V. Flight safety in a disturbed atmosphere, Moscow, Transport, 1992, 272 p. (in Russian).

4. Alekseev N. V., Vozhdaev E. S., Kravtsov V. G., Nazarov O. I. The measuring system new generation of air signals,Aviakosmicheskoe Priborostroenie, 2003, no. 8, pp. 31—36 (inRussian).

5. Kluev G. I., Makarov N. N., Soldatkin V. M., Efimov I. P. Meters of aerodynamic parameters of aircraft plane / edition by V. А. Mishin. Ulyanovsk: UlGTU, 2005, 509 p. (in Russian).

6. Soldatkin V. M., Soldatkin V. V., Krylov D. L. Theoretical foundations for building of aircraft’s air data system with motion lessflush-mounted receiver of flow, Mekhatronika, Avtomatizatsiya, Upravlenie, 2017, vol. 18, no. 7, pp. 495—502 (in Russian).

7. Ganeev F. A., Soldatkin V. M. Ion-mark sensor of aerodynamic angle and airspeed with logometric informative signals and interpolation processing scheme, Izvestiya Vysshikh Uchebnykh Zavedenii. Aviatsionnaya Tekhnika, 2010, no. 3. pp. 46—50 (in Russia).

8. Soldatkin V. M., Soldatkin V. V. Research of methodological errors of the air data system of aircraft with stationary included receiver of incoming air flow // Mekhatronika, Avtomatizatsiya, Upravlenie, vol. 20, 2019, no. 8, pp. 504—517 (in Russian).

9. Braslavskiy D. A. The accuracy of measuring devices, Moscow, Mashinostroenie, 1976, 312 p. (in Russian).

10. Ivanov Yu. P., Sinyakov A. N. Integration of informationmeasuring devices of aircraft plane, Leningrad, Mashinostroenie, 1984, 208 p. (in Russian).

11. Soldatkin V. M. Methods and means for measuring of aerodynamic angles of aircraft plane, Kazan, Publishing house Kazan. gov. tech. un-ty, 2001, 448 p. (in Russian).

12. Tsypkin Ya. Z. Fundamentals of theory of automatic systems, Moscow, Nauka, 1977, 560 p. (in Russian).

13. Sankovskiy E. A. Questions of theory of automatic control. Statistical analysis and synthesis of ACS, Moscow, Vysshaya shkola, 1971, 231 p. (in Russian).

14. Matrosov V. M., Anapolskiy A. Yu., Vasilev S. N. The comparison principle in mathematical systems theory, Novosibirsk, Nauka, 1979, 481 p.

15. Soldatkin V. V. Air data system of helicopter based on fixed aerometric receiver and information about aerodynamic field of vortex column of roto, Kazan, Publishing house Kazangov. tech. university,2012, 264 p. (in Russian).

16. Solodov A. V. Methods of system theory in continuous filtration problems, Moscow, Nauka, 1976, 264 p. (in Russian).